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Parking Brakes and the Landing Gear Suspension
Posted: Sun May 20, 2018 10:54 am
by Raller
If i am taxiing and in the movement i hit the Parking-Brakes, the Aircraft swings forward through the Landing Gear Suspension, but it doesn't swing back! It stucks in that forward-swinging-position.
Only when I release the Parking-Brakes, the Aircraft swings back!
Did i explain that understandable
Raller
Re: Parking Brakes and the Landing Gear Suspension
Posted: Sun May 20, 2018 2:55 pm
by sunjunkiesi
Yes the explanation is perfect. And it makes perfect sense to me. Try it in your car. Slam on the breaks and hold them, then release and watch as the car settles back. You have effectively locked the suspension in its compressed position.
Re: Parking Brakes and the Landing Gear Suspension
Posted: Sun May 20, 2018 3:11 pm
by Raller
Yes, ok, as long as you are moving. But when the Aircarft stops and stands still, the Aircraft should swing back!
But with Parking-Brakes ON the Aircraft stucks in the Forward-Swing-Position and never comes back again - until i release the Brakes!
The Parking-Brakes stops the tires but should not lock the suspension!
Re: Parking Brakes and the Landing Gear Suspension
Posted: Sun May 20, 2018 8:57 pm
by sunjunkiesi
Try it in your car.
Re: Parking Brakes and the Landing Gear Suspension
Posted: Sun May 20, 2018 10:40 pm
by Raller
Try it in the Sim and you can see what i mean...
Re: Parking Brakes and the Landing Gear Suspension
Posted: Mon May 21, 2018 8:02 am
by JonathanBleeker
If the brakes are strong enough they can prevent the aircraft from rotating back.
Re: Parking Brakes and the Landing Gear Suspension
Posted: Mon May 21, 2018 9:23 pm
by Raller
I belive that
BUT:
- If i roll and hit the "normal" Brakes until the Airplane comes to a standstill (and hold the brakes), the Plane swings back
- if i roll and hit the Parking-Brakes, the Airplane comes to a standstill and the Plane does not swing back
That looks weird and can not be right...
Re: Parking Brakes and the Landing Gear Suspension
Posted: Mon May 21, 2018 9:44 pm
by fppilot
sunjunkiesi wrote: ↑Sun May 20, 2018 2:55 pm
Yes the explanation is perfect. And it makes perfect sense to me. Try it in your car. Slam on the breaks and hold them, then release and watch as the car settles back. You have effectively locked the suspension in its compressed position.
What pray tell car are you drving?
Re: Parking Brakes and the Landing Gear Suspension
Posted: Mon May 21, 2018 10:28 pm
by Krazycolin
It’s possoble you broke the gear. I tried what you speak of at least 20 times. I do not see what you’re seeing at all. She bounces right back. Immediately.
Re: Parking Brakes and the Landing Gear Suspension
Posted: Mon May 21, 2018 11:53 pm
by fppilot
Krazycolin wrote: ↑Mon May 21, 2018 10:28 pm
It’s possoble you broke the gear. I tried what you speak of at least 20 times. I do not see what you’re seeing at all. She bounces right back. Immediately.
As does every car I have even driven... Suspensions are not tied to braking in normal vehicles, whether aircraft or cars.
Re: Parking Brakes and the Landing Gear Suspension
Posted: Tue May 22, 2018 12:32 am
by Krazycolin
I agree with you. Which is why I think you broke the gear.
Re: Parking Brakes and the Landing Gear Suspension
Posted: Tue May 22, 2018 12:37 am
by Raller
Could it be that CHASEPLANE causes that?
It looks like the Airplane "freezes" in the forward-position with Parking-Brakes ON and when i later release the Parking-Brakes, it swings back. Everything else works normal.
If I have time I would prefer to make a video to show this "physical phenomenon"

Re: Parking Brakes and the Landing Gear Suspension
Posted: Tue May 22, 2018 1:36 am
by Krazycolin
Disable chaseplane and ezdoc if you have it.